a big enclosure.....

[adio 5,000+ posts]

is it possible to make a large enclosure just out of fiberglass to save on weight??? im thinking of an enclosure for a sealed 21 sub but the weight of the box alone (birch)...... gatdam. this would be for a HT setup....thanks

Click to read more...

 

[blazian87 10+ year member]

Yea anything is possible with fiberglass, it's just time consuming. I was just watching youtube vids of fiberglassing the other day. It looks totally doable. Do you plan on moving the sub around alot or something? I already feel birch is light enough and don't see the point of fiberglassing unless you want a specific shape. I would imagine the sub being way heavier than the box anyway.

 

[Jeffdachef 5,000+ posts]

Ideal solution. Hit the gym, and lift some fking heavy @ss weights. a 300lb sub + enclosure carry wont feel like sh*t. Also make carrying handles or indentations, would help.

 

[Jeffdachef 5,000+ posts]

is it possible to make a large enclosure just out of fiberglass to save on weight??? im thinking of an enclosure for a sealed 21 sub but the weight of the box alone (birch)...... gatdam. this would be for a HT setup....thanks

Arauco ply is much much better than baltic birch in terms of lightness and is not far off in terms of strength, might want to look into that.

 

[Boomin_tahoe 5,000+ posts]

Fiberglass alone, I'm not sure how that would withstand the resonance from the sub....and esp a high power one, if you plan on feeding a lot of power. Maybe brace it?

IF it were up to me, I'd get some baltic birch and go from there. More $$ than mdf or any other wood but it's lightweight. Perhaps take a look at some birch wood at your local lumber store, Not Lowes or HD.

 

[adio 5,000+ posts]

thanks all....I was thinking 8.5 - 9 cuft WITH bracing. I was over at home theater shack and saw somebody building a sealed box for a 21 and he was guessing with its all said and done the box ITSELF would be close to 200lbs //content.invisioncic.com/y282845/emoticons/eek.gif.771b7a90cf45cabdc554ff1121c21c4a.gif

 

[Jeffdachef 5,000+ posts]

thanks all....I was thinking 8.5 - 9 cuft WITH bracing. I was over at home theater shack and saw somebody building a sealed box for a 21 and he was guessing with its all said and done the box ITSELF would be close to 200lbs //content.invisioncic.com/y282845/emoticons/eek.gif.771b7a90cf45cabdc554ff1121c21c4a.gif

meh when you can deadlift and farmer's carry 500, you should have no problems with a 200lb box. He probably used MDF. your weight will be more like 65lbs plus the sub with ply.

 

[Boomin_tahoe 5,000+ posts]

thanks all....I was thinking 8.5 - 9 cuft WITH bracing. I was over at home theater shack and saw somebody building a sealed box for a 21 and he was guessing with its all said and done the box ITSELF would be close to 200lbs //content.invisioncic.com/y282845/emoticons/eek.gif.771b7a90cf45cabdc554ff1121c21c4a.gif

Were they using mdf, as Jeff said?

 

[adio 5,000+ posts]

I have no idea..... if they were that's insane